Surface Hardening of Nickel-Based Alloys

Game-changing sustainable Technology

Surface hardening of nickel-based alloy is, like with stainless steel, a heat treatment technique that only very few companies master, and nobody does it like Expanite. Expanite’s patented and proven technology, scientific know-how and flexible delivery model significantly improves product performance, quality, and reduces costs.

The Expanite hardening processes effectively removes the oxide film protecting the alloy. This allows for controlled diffusion of nitrogen and carbon atoms in the underlying metal. The hardened layer is characterized by an expansion of the material structure, and even we refer to this zone as expanded austenite, or simply, Expanite®.

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Sustainability might be a choice, but with Expanite it´s a given!

Sustainability has since the foundation of the company been close to the hearts of the founders. Not only is the sole purpose of the treatments aiming at extending lifetime of components and systems, the “path” to achieve this life-extending state is more sustainable compared to alternative/competitive products: the ultra-short processing times yielding lowest possible carbon footprint, the lack of chemicals used before & after processing, and the non-toxic-waste processing are all core elements of Expanite’s technology, not a choice!

Dedicated process to prevent wear & galling on many alloys

The process for nickel-based alloys is typically ExpaniteLow-T, and this is applicable for the most common nickel-based alloys families including Inconel®, Hastelloy® and Monel. The outcome is a significant improvement in wear and galling resistance due to a surface hardness of approx. 700-1500HV.

In most cases, Expanite’s solutions for surface hardening of nickel-based alloys is used for customers who today are using coatings or lubricants to avoid galling, but need a cleaner and better-performing solution.

Introduction to nickel-based alloys

Nickel-based alloys are materials that are composed mainly of nickel and some other elements. Ni-based alloys are known for their excellent corrosion resistance and strength. They are often found in high-temperature environments due to their superior resistance to heat. Some of the most known nickel-based alloys families are Inconel®, Hastelloy® and Monel but several other manufactures and alloys are available. The most common nickel-based alloys are:

Inconel® 600, 2.4816 , Inconel® 617, 2.4663, Inconel® 625, Inconel® 718 2.4668
Hastelloy® C-4, 2.4610 , Hastelloy® C-22, 2.4602, Hastelloy® C-276, 2.4819
Monel-400, 2.4360, Monel K-500 2.4375

Don´t just take our word for it!

Expanite has several customers using ExpaniteLow-T on nickel-based alloys, for case stories etc. click below:

The result already after first test proved overwhelmingly convincing on all parameters and most importantly, the galling phenomenon disappeared completely. There has been no records of damaged parts ever since

Roman Hörbe, Supply Chain Manager - Enpulsion GmbH

We have had a very positive beginning with Expanite, and as the equipment is to deliver more and more and is pushed to the limits, the need for extra hardening of vital components will also increase

Per Brandt - MAN Energy Solution

With the ExpaniteHard-Ti surface hardening, the stressed titanium components will withstand significant wear and thus prevent long-term use of the winch system

Alfred Wegener Institute

We are very satisfied with the impressive results of the unique Expanite technology which completely meets all our demands and expectations. Expanite´s support, knowledge and experience throughout this project have been first-class

Lars Meesmann, - LIAG® LÄUFER International AG

I soon realized that the ExpaniteHard-Ti process was the only matured and commercially available interstitial hardening technology for titanium. The webinar combined with the details of the technology on their web site helped me to develop realistic expectations and I reached out to them

Zsolt Pataki, Capillaris

We have been working with Expanite for more than 15 years now, and besides the innovative treatment technology and performance improvement of our products, we particulary appreciate their short response time and very fast processing time. Moreover, their support is always very competent and they have sympathetic way of communicating

An Tieer 1 and OEM-Supplier - Automotive industry, Germany

We are thrilled and appreciative about the support we have received by the Expanite expert team. With the guidance and recommendations from Expanite, we are convinced that with the Expanite hardening technology we will experience less or no wear on the titanium parts in our race cars

Ignacio Gabilondo, Rennteam Uni Stuttgart

Previously we had problems with our brick joint trowel wearing out too fast, but after surface hardening these with Expanite’s technology, test results showed that the tools last 7 times longer

Jens Seest Knudsen - Murergrej.dk

We are working with Expanite because we know that we always get a premium product - we simply get the right quality at the right time

LHM Strates Maskinfabrik A/S

We know that when working with Expanite, there is plenty of solid advice and sparring to get - and Expanite teach us things to be done differently. Typical characteristics for companies growing successfully

Odd Harry Omholt, Quality Control - Semcom Norway

With the technology that Expanite offers we as a manufacture of hydraulic component in stainless steel, have been able to improve our products in several important areas

Jens S. Madsen, CEO/Owner - SSH Stainless

Surface Hardening of Nickel-Based Alloys

Game-changing sustainable Technology

Sustainability might be a choice, but with Expanite it´s a given!

Dedicated process to prevent wear & galling on many alloys

Introduction to nickel-based alloys

Don´t just take our word for it!

Got any questions?

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